Assuming we are talking finished goods and not components, I’d actually go with good quality freezer bags from your grocery store, as they’re designed to keep liquids in. (Most non-food ziplock bags are not entirely watertight, which you want when keeping things dry.) Ideally, you’d put the electronic gadgets into a silver antistatic bag first with the desiccant, and then put that into a freezer bag. Or even vacuum seal it if you have the sealer and it’s for long term storage.
For components, you definitely want the silver antistatic bags. Either a quality one if you’ll use it alone, or a cheaper less airtight one if you’ll double bag it.